update changelog for commoncrypto backend
update changelog for commoncrypto backend

bwhmather/cryptography,sholsapp/cryptography,skeuomorf/cryptography,bwhmather/cryptography,Hasimir/cryptography,kimvais/cryptography,sholsapp/cryptography,kimvais/cryptography,Ayrx/cryptography,Lukasa/cryptography,skeuomorf/cryptography,Hasimir/cryptography,kimvais/cryptography,sholsapp/cryptography,Ayrx/cryptography,Hasimir/cryptography,dstufft/cryptography,dstufft/cryptography,dstufft/cryptography,kimvais/cryptography,sholsapp/cryptography,skeuomorf/cryptography,dstufft/cryptography,Lukasa/cryptography,bwhmather/cryptography,Ayrx/cryptography,Hasimir/cryptography,skeuomorf/cryptography,bwhmather/cryptography,Ayrx/cryptography,Lukasa/cryptography,dstufft/cryptography